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Basis Of Presentation And Summary Of Significant Accounting Policies (Shipping And Handling Costs) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]
Shipping and handling costs	$ 12.9	$ 16.3	$ 17.7

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Out-Bound Shipping And Handling Costs

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